CN102136565A - Iron oxide-selenium nano composite cathode material for lithium ion battery and preparation method thereof - Google Patents
Iron oxide-selenium nano composite cathode material for lithium ion battery and preparation method thereof Download PDFInfo
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- CN102136565A CN102136565A CN2010101001662A CN201010100166A CN102136565A CN 102136565 A CN102136565 A CN 102136565A CN 2010101001662 A CN2010101001662 A CN 2010101001662A CN 201010100166 A CN201010100166 A CN 201010100166A CN 102136565 A CN102136565 A CN 102136565A
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- iron oxide
- selenium
- lithium ion
- cathode material
- ion battery
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention belongs to the electrochemistry field, in particular to an iron oxide-selenium nano composite cathode material for a lithium ion battery and a preparation method thereof. The material is in a film mode and prepared through a laser sputtering sedimentation method. The electrode prepared from the film has favorable charging and discharging cycle reversibility and can be used as a cathode material of the lithium ion battery. The film electrode of the prepared iron oxide-selenium nano composite material has the reversible specific capacity of 458 mAh/g; and the iron oxide-selenium nano composite electrode material has good chemical stability, high specific capacity and extreme small charging and discharging platform. The preparation method provided by the invention is simple and suitable for lithium ion batteries.
Description
Technical field
The invention belongs to technical field of electrochemistry, relate to iron oxide-selenium nanometer composite cathode material, be specifically related to iron oxide-selenium nanometer composite cathode material that is used in a lithium ion battery and preparation method thereof.
Background technology
It is the vital power supply of notebook computer, camera, mobile phone and other Communication Equipment that prior art discloses lithium ion battery, studies show that, it might be used for automobile and other vehicles as green energy resource.At present commercially available lithium ion battery is mainly by the carbon back negative material, and liquid organic electrolyte is formed with the transition metal oxide positive electrode that contains lithium.Development and the continuous needs of expanding of practice thereof along with above-mentioned field, raising to the performance of lithium ion battery is had higher requirement, in order further to improve the performance of lithium ion battery, this area researcher studies, seeks than the better novel negative material of carbon back negative material performance.In addition, along with the miniaturization of microelectronic component, the lithium-ion film cell that an urgent demand exploitation is complementary therewith.Do not see as yet about iron oxide-selenium (Fe so far
2O
3-Se) nano composite material is used as the report of lithium ion battery negative material.
Summary of the invention
The objective of the invention is to further to improve the performance of the lithium ion battery of prior art, a kind of iron oxide-selenium nanometer composite cathode material is provided, be specifically related to a kind of iron oxide-selenium (Fe that is used for lithium ion battery
2O
3-Se) nano composite anode material and preparation method thereof.
Iron oxide-selenium (the Fe that is used for lithium ion battery that the present invention proposes
2O
3-Se) composite negative pole material is a kind of thin-film material of iron oxide-selenium nanometer composite cathode material.Show that after deliberation this type of material has good electrochemical, can be used as the negative material of high performance lithium ion battery.
Iron oxide-selenium (Fe that the present invention proposes as lithium ion battery negative material
2O
3-Se) nano composite material is a form of film.
Iron oxide-selenium (the Fe that is used for lithium ion battery that the present invention proposes
2O
3-Se) the preparation method of nano composite anode material, it comprises the steps:
Adopt the laser splash sedimentation to prepare iron oxide-selenium (Fe of lithium ion battery negative material
2O
3-Se) nanocomposite films: croci and simple substance selenium powder end are mixed, grind the back compressing tablet and make the used target of laser splash deposition.Target and substrate distance are 3～5cm, and vacuum degree is 10 in the sputtering chamber
-4～10
-5Pa, sedimentation time are 0.5～2 hour.
Among the present invention, described substrate is a stainless steel substrate.
Among the present invention, iron oxide-selenium (Fe
2O
3-Se) the material composition and the crystal structure of nanocomposite films are determined by transmission electron microscope (JEOL 2010).Selected area electron diffraction collection of illustrative plates (SAED) and X-ray energy scattering spectra (EDX) result show, the iron oxide-selenium (Fe that is made by described laser splash sedimentation
2O
3-Se) material of nanocomposite films consists of Fe
2O
3And Se.
Iron oxide-selenium (Fe that the present invention makes
2O
3-Se) nanocomposite films can directly be made the lithium ion cell film electrode.
The present invention adopts the hull cell system testing iron oxide-selenium (Fe that is made up of three electrodes
2O
3-Se) the chemical property of nanocomposite films electrode.Wherein, iron oxide-selenium nano compound film is as work electrode, and the high purity lithium sheet is used separately as to electrode and reference electrode.Electrolyte is 1M LiPF
6+ EC+DMC (V/V=1/1), hull cell are assemblied in the drying box of applying argon gas and carry out, and the experiment that discharges and recharges of hull cell is carried out on blue electricity (Land) hull cell test macro.
Among the present invention, the iron oxide-selenium (Fe that on substrates such as stainless steel substrates, makes by the laser splash sedimentation
2O
3-Se) the nanocomposite films electrode has charge-discharge performance, at voltage range 0.01～4.0V and current density 5 μ A/cm
2The time, the platform of exoelectrical reaction appears at 0.82V (with respect to Li/Li
+), for the second time discharge process with the first time discharge process compare, irreversible discharge capacity loss is 18.4%.The second later cyclic process of week has good invertibity, and average each circulation volume decay only is 0.56%.
Above-mentioned The performance test results shows, iron oxide-selenium (Fe2O that the present invention makes
3-Se) nano composite material is a kind of novel negative material, has following advantage:
1, this material is a form of film
2, the electrode that this film is made has good charging and discharging circulation reversibility, can be used as the negative material of lithium ion battery;
3, the reversible specific capacity of this iron oxide-selenium (Fe2O3-Se) nanocomposite films electrode is 458mAh/g;
4, iron oxide-selenium (Fe2O3-Se) nanometer combined electrode material chemical stability is good, specific capacity is high, the polarization of charge and discharge platform is little;
5, preparation method of the present invention is simple, is applicable to lithium ion battery.
For the ease of understanding, below will describe in detail of the present invention by concrete drawings and Examples.It needs to be noted, instantiation and accompanying drawing only are in order to illustrate, obviously those of ordinary skill in the art can illustrate according to this paper, within the scope of the invention the present invention is made various corrections and change, and these corrections and change are also included in the scope of the present invention.
Description of drawings
Fig. 1 is embodiment 1 iron oxide-selenium (Fe
2O
3-Se) the SAED spectrogram of nanocomposite films.
Embodiment
When adopting the laser splash sedimentation to prepare iron oxide-selenium nano composite material (Fe2O3-Se) film, croci and simple substance selenium powder end are mixed, grind the back compressing tablet and make the used target of laser splash deposition.Target and substrate distance are 3～5cm, and vacuum degree is 10-4～10-5Pa in the sputtering chamber, and sedimentation time is 0.5～2 hour.
SAED and EDX diffraction are measured the material of iron oxide-selenium (Fe2O3-Se) nanocomposite films that shows deposition and are formed (shown in Fig. 1 and table 1).
Electrochemical property test result to the iron oxide-selenium on the stainless steel substrate (Fe2O3-Se) composite material film electrode is as follows:
Iron oxide-selenium (Fe2O3-Se) nanocomposite films electrode can carry out charge and discharge cycles under 5 μ A/cm2 charge-discharge velocities.In voltage range 0.01-4.0V, discharge capacity can reach 561.58mAh/g for the first time, and reversible capacity is about 458.02mAh/g.
Therefore, the iron oxide-selenium that deposits on stainless steel substrates (Fe2O3-Se) nanocomposite films can be used as the negative material of lithium-ion film cell.
Table 1 is iron oxide-selenium (Fe
2O
3-Se) the EDX analytical table of nanocomposite films.
Table 1
| Element | Peak area | Area standard is poor | The K factor | Mass percent % | Quality standard is poor | Constituent content |
| O | 466 | 42 | 1.810 | 28.67 | 2.05 | 59.53 |
| Fe | 1343 | 58 | 1.170 | 53.39 | 2.03 | 31.76 |
| Cu | 245 | 27 | 1.366 | 11.39 | 1.20 | 5.95 |
| Se | 102 | 22 | 1.894 | 6.55 | 1.37 | 2.76 |
| 100 |
Claims (5)
1. be used for the iron oxide-selenium nanometer composite cathode material of lithium ion battery, it is characterized in that, described iron oxide-selenium nanometer composite cathode material is iron oxide-selenium nanocomposite films, and its material consists of Fe
2O
3And Se.
2. the preparation method of the iron oxide-selenium nanometer composite cathode material that is used for lithium ion battery of claim 1 is characterized in that, adopts the laser splash sedimentation, by following step,
Croci and simple substance selenium powder end are mixed, grind the back compressing tablet and make the used target of laser splash deposition; Target and substrate distance are 3～5cm, and vacuum degree is 10 in the sputtering chamber
-4～10
-5Pa, sedimentation time are 0.5～2 hour.
3. the purposes of the described iron oxide-selenium nanometer composite cathode material of claim 1 in preparation lithium ion cell film electrode.
4. by the purposes of claim 3, iron oxide-selenium nanometer composite cathode material is wherein directly made the lithium ion cell film electrode.
5. by the purposes of claim 3 or 4, iron oxide-selenium nanometer composite cathode material wherein is iron oxide-selenium nanocomposite films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101001662A CN102136565A (en) | 2010-01-22 | 2010-01-22 | Iron oxide-selenium nano composite cathode material for lithium ion battery and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101001662A CN102136565A (en) | 2010-01-22 | 2010-01-22 | Iron oxide-selenium nano composite cathode material for lithium ion battery and preparation method thereof |
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|---|---|
| CN102136565A true CN102136565A (en) | 2011-07-27 |
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ID=44296269
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|---|---|---|---|
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|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022473A (en) * | 2013-01-10 | 2013-04-03 | 西南大学 | Method for preparing gamma-Fe2O3 positive-pole material for lithium-ion battery |
| CN106711424A (en) * | 2017-01-12 | 2017-05-24 | 青岛大学 | Cobaltous oxide based nano complex electrode material and preparation method thereof |
| CN106784723A (en) * | 2017-01-12 | 2017-05-31 | 青岛大学 | One kind oxidation iron-based nano-complex electrode material and preparation method thereof |
| CN111193028A (en) * | 2020-01-08 | 2020-05-22 | 九江学院 | Preparation method of Fe-CrSe/C composite electrode material with nano structure |
-
2010
- 2010-01-22 CN CN2010101001662A patent/CN102136565A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| M. V. REDDY, ETAL: "a-Fe2O3 Nanoflakes as an Anode Material for Li-Ion Batteries", 《ADVANCED FUNCTIONAL MATERIALS》 * |
| 薛明喆，傅正文: "脉冲激光沉积法制备FeSe薄膜电极及其电化学性质", 《化学学报》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022473A (en) * | 2013-01-10 | 2013-04-03 | 西南大学 | Method for preparing gamma-Fe2O3 positive-pole material for lithium-ion battery |
| CN106711424A (en) * | 2017-01-12 | 2017-05-24 | 青岛大学 | Cobaltous oxide based nano complex electrode material and preparation method thereof |
| CN106784723A (en) * | 2017-01-12 | 2017-05-31 | 青岛大学 | One kind oxidation iron-based nano-complex electrode material and preparation method thereof |
| CN106784723B (en) * | 2017-01-12 | 2019-10-18 | 青岛大学 | It is a kind of to aoxidize iron-based nano-complex electrode material and preparation method thereof |
| CN106711424B (en) * | 2017-01-12 | 2019-10-18 | 青岛大学 | A kind of cobalt protoxide base nano-complex electrode material and preparation method thereof |
| CN111193028A (en) * | 2020-01-08 | 2020-05-22 | 九江学院 | Preparation method of Fe-CrSe/C composite electrode material with nano structure |
| CN111193028B (en) * | 2020-01-08 | 2022-11-11 | 九江学院 | Preparation method of Fe-CrSe/C composite electrode material with nano structure |
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Application publication date: 20110727 |